Exhaust Systems

[tuff304]

Hi everyone,

I plan on getting an exhaust on my SS soon and after reading many threads and posts, its still a little unclear what exhaust i need to purchase. I have asked a few sponsors and exhaust shops who have both recommended 4=>1s and tri-y's :confused: I dont plan on doing anything else other than valve springs and diff gears (prob 3.73) opps nearly forgot and an edit of some kind :driving: , so keeping that in mind can I please have some suggestions from the LS1 pros on what type of exhaust i should get and what size also, all i know is i want stainless steel. I dont really thrash my car it doesnt really see more than 2500rpm on a normal drive. Sound is not of a huge conern i would rather optimise performance than sound.

Thanks and let the fountain of knowledge flow.......

sorry guys forgot to add i would like to run 13.2 - 12.90 down the strip if that helps too at about 107-110 if thats possible

[dracer]

call difilippo in melton, 2k for full system, money well spent bro

[SSwaggin]

HI mate,If you plan to keep the mod's limited to bolt on's,i'd lean towards the tri-y's.Grab a pair of good quality cat's aswell.As from the cat back,there are plenty of good systems around.Do a search on here there's heaps of info available.I have a complete HSV set up on my waggin and i love it,a mate has pacemaker tri-y's,cats and X-FORCE cat back and his car sounds awesome at WOT and is quiet cruising around.Try to keep away from the dredded DRONE:( it will drive you MAD! Good luck shopping.....

[Holden Nut]

Hi everyone,

I plan on getting an exhaust on my SS soon and after reading many threads and posts, its still a little unclear what exhaust i need to purchase. I have asked a few sponsors and exhaust shops who have both recommended 4=>1s and tri-y's :confused: I dont plan on doing anything else other than valve springs and diff gears (prob 3.73) opps nearly forgot and an edit of some kind :driving: , so keeping that in mind can I please have some suggestions from the LS1 pros on what type of exhaust i should get and what size also, all i know is i want stainless steel. I dont really thrash my car it doesnt really see more than 2500rpm on a normal drive. Sound is not of a huge conern i would rather optimise performance than sound.

Thanks and let the fountain of knowledge flow.......

sorry guys forgot to add i would like to run 13.2 - 12.90 down the strip if that helps too at about 107-110 if thats possibleIs there any reason why you need to have stainless steel? As far as I know its of no benefit unless you plan on keeping the car for a long long time (someone correct me if I'm wrong) and you can save on this (more money for other mods!) Anyhow imo you should get a twin 2.5" system, using the factory cats and having them opened up (unless they are stuffed). At the end of the day 4>1's will be better in terms of performance but many say you will sacrifice some down low torque. As to how much I don't know. On my current car and last two cars I have run pacemaker 1 & 5/8 try-y's along with a twin 2.5" system and I've been quite happy with the results. Is your car an A4 or M6? Either way, you should be able to achieve those times/speed at the strip if you do those mods.

[Greeny34]

Is there any reason why you need to have stainless steel? As far as I know its of no benefit unless you plan on keeping the car for a long long time (someone correct me if I'm wrong) and you can save on this (more money for other mods!) Anyhow imo you should get a twin 2.5" system, using the factory cats and having them opened up (unless they are stuffed). At the end of the day 4>1's will be better in terms of performance but many say you will sacrifice some down low torque. As to how much I don't know. On my current car and last two cars I have run pacemaker 1 & 5/8 try-y's along with a twin 2.5" system and I've been quite happy with the results. Is your car an A4 or M6? Either way, you should be able to achieve those times/speed at the strip if you do those mods.

Dont stainless also give a different note to a mild steel sytem?? Could be wrong

[dracer]

exhaust gurus say it sbecause of additives in fuel, it eats your syatem away.
,ost good exhaust makers dont do mild steel anymore, with the exception of old models,i can see a problem if ur only keeping vehicle for a yr or 2.

stainless does give a different note, but only slightly!

QUESTION, with new tech and stuff, is it worth pulling ur cats out and doing the ole pipe through the centre trick, i know we did it alot with the ole injected 5ltrs, while retaining the stock cat back system!

[tuff304]

call difilippo in melton, 2k for full system, money well spent bro

2k for a full stainless steel system? Wow alot of people I spoke to said just the headers were about 1500


exhaust gurus say it sbecause of additives in fuel, it eats your syatem away.
,ost good exhaust makers dont do mild steel anymore, with the exception of old models,i can see a problem if ur only keeping vehicle for a yr or 2.

stainless does give a different note, but only slightly!

QUESTION, with new tech and stuff, is it worth pulling ur cats out and doing the ole pipe through the centre trick, i know we did it alot with the ole injected 5ltrs, while retaining the stock cat back system!

alot of shops i called told me that as well, that the mild steel will rust out quickly if you do alot of short trips, most people say the stainless will sound heaps better


Is there any reason why you need to have stainless steel? As far as I know its of no benefit unless you plan on keeping the car for a long long time (someone correct me if I'm wrong) and you can save on this (more money for other mods!) Anyhow imo you should get a twin 2.5" system, using the factory cats and having them opened up (unless they are stuffed). At the end of the day 4>1's will be better in terms of performance but many say you will sacrifice some down low torque. As to how much I don't know. On my current car and last two cars I have run pacemaker 1 & 5/8 try-y's along with a twin 2.5" system and I've been quite happy with the results. Is your car an A4 or M6? Either way, you should be able to achieve those times/speed at the strip if you do those mods.

car is an a4

Thanks for your help

[BLACKWAGON]

Its around 1500 just for a cat back in stainless from other brands, dont know difillipo prices but would think more.
I have custom hm headers with hiflows, cost me 1250 and they fit so easy, dont sit low at all either.Cat back is xforce twin 2.5 stainless, power wise im happy and it sounds good.(1500)
If you are going to spend the cash on a system dont cut ur cats just get hiflows and do it properly,.

[555]

Mate I wouldn't say stainless sounds heaps better. Its well known that SS gives you a more metallic 'tinny' exhaust note, and given that most people who do a zorst want that low V8 burble (at least I do), mild steel is the way to go. Having said that, the difference is not considerable.

If people are actually telling you that SS sounds better they must be zorst shops trying to get you to spend more money!

[dracer]

2k for mild steel, thats it i had a quote done only 3mnths ago, 3900 for stainless on new maloo though

[dogsballs]

d/f 4into1's 1 3/4 into 3" s/s $995
d/f twin 3" s/s cat-back $1790
then a pair of metal cats $390 ea

no such thing as to big, especially if you are going to run a convertor, then give you options later down the line ;)

[brentonsav]

bay city holden in frankston had a special on a while back with full difillipo system in mild steel supply only for $1750... maybe give them a call as they may well have some good ongoing prices...
any exhaust joint can obviously install exhausts but it took chev to get mine right. :D

[555]

Apparently you can't get a difillipo twin 3" in mild steel which is a shame because it costs $3900 in SS!

[Crusty]

My advice from exhaust shops was that 5 years is fine for a Mild Steel setup much more and they'd look at going S/S. I've never kept a car past 5.5 years anyway so I just go with Mild, saves heaps of $$$ which can be well spent on other areas :burnout:

[vt350phantom]

A sureflo or DF system is the way to go. Tri-ys if you want to maximise low down torque, 4>1s may be preferred if chasing best ET. Sound is something that can be tailored according to your requirements. If you want a deep angry sound the sureflo 3.5" inch single will serve you well.

Stainless is a total waste of money IMHO unless you plan to keep the car for ages. My mild steel system plus tri-ys cost less than 1500 bucks, and the money I saved was used for the tune.

Also, get high flow cats straight up (metal substrate), opened cats are ok but they dont seem to last that long and start to rattle a lot.

You said your car doesn't see more than 2500 rpm??? In a stock car there is no power under 2500 rpm so you must be struggling to see off cyclists at the lights!!!!! :lmao: :lmao: :lmao:

Good luck with it all mate :thumbsup:

[tuff304]

A sureflo or DF system is the way to go. Tri-ys if you want to maximise low down torque, 4>1s may be preferred if chasing best ET. Sound is something that can be tailored according to your requirements. If you want a deep angry sound the sureflo 3.5" inch single will serve you well.

Stainless is a total waste of money IMHO unless you plan to keep the car for ages. My mild steel system plus tri-ys cost less than 1500 bucks, and the money I saved was used for the tune.

Also, get high flow cats straight up (metal substrate), opened cats are ok but they dont seem to last that long and start to rattle a lot.

You said your car doesn't see more than 2500 rpm??? In a stock car there is no power under 2500 rpm so you must be struggling to see off cyclists at the lights!!!!! :lmao: :lmao: :lmao:

Good luck with it all mate :thumbsup:

its a road not a race track ;) j/k

yeh i do get owned by almost everything haha

but thanks for all your responses

has anyone drive an ls1 with both types of exhausts?

would like to know what the difference is like?

[farnzie97]

s/s exhaust systems are over priced and over rated, Mild steel will give you a better note and save you heaps of $$$ and go with pacemakers extractors, i found they gave me a really nice note down low.
cheers

[Crusty]

s/s exhaust systems are over priced and over rated, Mild steel will give you a better note and save you heaps of $$$ and go with pacemakers extractors, i found they gave me a really nice note down low.
cheers

I tend to agree about being overpriced but don't see how Mild steel has a better note? I've always loved the sound of a S/S system.

[MNR-0]

Don't bother. Considering the use you described, keep the stock unit and replace the mufflers.

"IF" you are serious and want to splurge on SS, LT 4-1s and dual 3" all the way. The best off the shelf I have seen is the Difillipo *NEW* Kooks merge collector series, readily available in OZ through most workshops.

You may wanty to mod it more down the line - like all of us have done.

[Crusty]

You may wanty to mod it more down the line - like all of us have done.

Thats why I prefer Mild, means I'm not spending too much if in 12 months I want to change it.

[crtx]

Dude,

Don't bother with 4>1 if your not going to do cam or force induction waste of time, get your self some Tri-Y's good for street driving as the torque is down low to mid range. Go the sureflow 3 1/2 def.

I just put a full system on
Tri Y's, two hi flo cats, single 3 1/2 loud.

IF you want to have a listern PM me

in total cost was $2000 fitted.

[tuff304]

thanks for all the replies guys, makes the decision alot easier. I'm leaning towards the tri-y's 1 5/8' primaries and 2.5' cats and a 2.5' mandrel bent system. Still undecided about whether to go stainless or not. Can anyone advise if Di Fillippo make tri-ys? how long does mild steel last before rusting out etc? I have been advised to get an X Force stainless system, has anyone had any experience with them? are they good systems etc? Any more recommendations?

Cheers


Dude,

Don't bother with 4>1 if your not going to do cam or force induction waste of time, get your self some Tri-Y's good for street driving as the torque is down low to mid range. Go the sureflow 3 1/2 def.

I just put a full system on
Tri Y's, two hi flo cats, single 3 1/2 loud.

IF you want to have a listern PM me

in total cost was $2000 fitted.

CRTX please check your PM

[crtx]

thanks for all the replies guys, makes the decision alot easier. I'm leaning towards the tri-y's 1 5/8' primaries and 2.5' cats and a 2.5' mandrel bent system. Still undecided about whether to go stainless or not. Can anyone advise if Di Fillippo make tri-ys? how long does mild steel last before rusting out etc? I have been advised to get an X Force stainless system, has anyone had any experience with them? are they good systems etc? Any more recommendations?

Cheers



CRTX please check your PM

Xforce, Redback systems are all off the shelf and have known to drone. if you want your extractors to last either go for Stainless or HPC. I just got standard pacies in blue.

PM Checked.

[250clubby]

dont mean to take over your thread but i have a 2000 model vtII hsv clubsport 5.7 litre when i bought it, it has an x force mild steel twin exhaust from the end of the cats back the rest of the exhaust is standard hsv what can i do to get rid of the drone n make it louder and lumpier i was told by a friend to keep the hsv extractors but replace from them back he also said remove my 2 rear mufflers n fit hot dogs does that sound stupid? or not im am new to this i have only owned turbos before.... thanks

[RED R8]

I have a Xforce mild steel system with hsv extractors sounded HEAPS better with rear resi removed and two straight through pipes fitted and cost $80.

Do a search type in " exhaust sound files " and you can listen to mine with no resi (sounded much better in real life though).

[tuff304]

I have a Xforce mild steel system with hsv extractors sounded HEAPS better with rear resi removed and two straight through pipes fitted and cost $80.

Do a search type in " exhaust sound files " and you can listen to mine with no resi (sounded much better in real life though).

does it drone at all?

[RED R8]

does it drone at all?

In a manual it is not bad very slight drone at low rpms but very bearable.

[tuff304]

In a manual it is not bad very slight drone at low rpms but very bearable.

I guess I'm a little more fussing, I want to try and eliminate drone all together if thats possible, but probably not when you change the exhaust that much

[hogs]

Evening,

I have HM Tri Y's, 100ss I think they are, and ESA 2.5 twin cat back with opened up cat pipes.
No drone in a wagon, all up fitted less than $1000.

Not too many folk walking around with mirrors looking at how nice your system looks under the car.

As far as the headers are concerned, things have changed a bit, but Sams ran a comparo article for Street Machine and I feel that the results are on the Forum somewhere.

Cheers,

Hogs.

[morey92]

Dude,

Don't bother with 4>1 if your not going to do cam or force induction waste of time, get your self some Tri-Y's good for street driving as the torque is down low to mid range. Go the sureflow 3 1/2 def.

I just put a full system on
Tri Y's, two hi flo cats, single 3 1/2 loud.

IF you want to have a listern PM me

in total cost was $2000 fitted.







l'm planning to do the same but opening up the standard cats. Would love to hear how it sounds, but l can't yet pm

[throttlehappy]

ive got a stainless remus race exhaust and it sounds bloody great! even when it was cat back only. it was on the car when i bought it mind you and there not cheap. ive also got pacey 4 into 1's (1 3/4) and 3 inch high flow cats which really deepened the note. mine has a slight tinny sound in sixth but i think thats more the paceys, in the first few gears its anything but tinny :lol:

[tuff304]

thanks for all the replies, i think i know what I'm going to get now...

[michaels1v8]

Care to share with us what that is????:thumbsup:

[250clubby]

I have a Xforce mild steel system with hsv extractors sounded HEAPS better with rear resi removed and two straight through pipes fitted and cost $80.

Do a search type in " exhaust sound files " and you can listen to mine with no resi (sounded much better in real life though).

mine has the rear resonator removed it only has the 2 mufflers thats it but its not as loud as i would like i want a deep loud rumble

[tuff304]

Care to share with us what that is????:thumbsup:

i'm thinking pacemaker tri-y's 1 5/8 with 2.5' high flow cats and a 2.5' manderl bent stainless steel system, I've got an a4 and was told it should make good low down torque. i guess i will find out soon enough.

[michaels1v8]

sounds exactly like what I am going to do... except get a 3.5 inch loud sureflow cause i am getting a manual...

Will sounds good dude and go alot better. good luck:yahoo:

[VTSSDUDE]

its a road not a race track ;) j/k

yeh i do get owned by almost everything haha

but thanks for all your responses

has anyone drive an ls1 with both types of exhausts?

would like to know what the difference is like?

Well I am probably going to get flamed for this, but it's my car and I do whatever I feel like.
I have a mild steel 2.25" twin system all the way to the back of the car. My Gen III has almost the same note as a 5L. That's just a cat back system.
I have a mate with the same car as me, with 2.5" system, sounds way too yuckie for my liking.

I had a VN V6 with a full system (mild steel) for 3 and half years with that system on, car is still going (as my brother has it now) The exhuast system including the muffler have no signs of any rust.

[BLACK 346]

Well I am probably going to get flamed for this, but it's my car and I do whatever I feel like.
I have a mild steel 2.25" twin system all the way to the back of the car. My Gen III has almost the same note as a 5L. That's just a cat back system.
I have a mate with the same car as me, with 2.5" system, sounds way too yuckie for my liking.

I had a VN V6 with a full system (mild steel) for 3 and half years with that system on, car is still going (as my brother has it now) The exhuast system including the muffler have no signs of any rust.

I have heard 2 cars in the past with 2.25 cat backs, yes they
did sound like a venerable old holden V8, except it wasn't the
5L they sounded like, much more like the 4.2L ;)